Method and Device for Time-Of-Flight Estimate

3. The method according to claim 2, wherein the determining of an estimate error comprises determining a difference between the estimate of envelope signal and the envelope signal.

4. The method according to claim 2, further comprising, based on the estimate of the time-of-flight, determining a distance estimate indicative of a distance between the target object and the device, wherein the determining of an estimate error comprises determining a difference between the distance estimate and the distance.

5. The method according to claim 1, wherein the determining of the envelope signal comprises performing a Hilbert transformation on the electric echo signal.

6. The method according to claim 1, wherein the portion of the envelope signal is centered about a maximum value of the envelope signal.

7. The method according to claim 1, wherein the processing of the portion of the envelope signal comprises providing a regenerated envelope signal.

10. The method according to claim 9, wherein said portion of the envelope signal is defined between the second temporal position and the third temporal position.

16. The method of claim 15, comprising determining a parameter of the Unscented Kalman Filter based on Particle Swarm Optimization.

18. The method according to claim 15 wherein the determining of the first envelope signal includes performing a Hilbert transformation on the electric echo signal.

19. The method according to claim 15 wherein the determining of the portion of the first envelope signal includes determining the portion of the first envelope signal that is centered at a maximum value of the first envelope signal.